Dumping truck



G. A. WO0D.

7 DUMPING TRUCK.. lAPPLlc/mou FILED MAY9.1918.

.Patented Feb; 7; 1922.

.QQ ...S

n n E .E E n UNITED STA 'rl-:sPATE Nr oFFlcI-Li GARFIELD A. WOOD, OF DETROIT, MICHIGAN.

DUMPING TRUCK.

Specification of Letters Patent.

Patented Feb. 7, 1922.

Original application filed December 26, 1916, Serial No. 138,762. Divided and thislapplicatipon iiled Hay 9,1918. Ser-ia1No. 283,v544. f t

To all 'whom t may concern Be it known that I, GARFIELD A. Woon, a

. .citizen of the United States, and residing at Detroit, in the county of Wayne and, State of Michigan, have invented a new and Imy proved Dumping Truck, of which the following is a specification.

This application is a' division of my application forU. S. Letters Patent, S. N. 138,7 62, filed December- 26, 1916.

A i The present invention relates tomeans for dumping vthecimtents of truckbodies by vices is avoided. The whole hoist and body lifting the` front ends thereof upwardly aboutpivots located at the rear end of the chassis. l i

-It-Lhas been hydraulic hoisting mechanism for this pur ose gabld's'leading to they front end of the body led down'between the side bars of the chassis when the body was lowered. The Space between the side bars is often neededA for other parts which form essential: elements ofv the chassis unit and it has proven a matter of ditliculty to provide clearance for the cables and associated" body arms. The primary i object of the present invention is to provide a cross arm construction of such 'Character that it may be cheaply and readilymanufactured and assembled, and may be employed in greater lengths than was feasible in former constructions, whereby the connections of the cables to the body maybe made outside of the side bars and whereby the use of separate additional equalizing bars or deconstruction is thus rendered more readily applicable to the chassis of different trucks. Inthe drawings, Figure 1 is a fragmentary side view of a motor truck showing apreferred embodiment of myinvention. Fig.. 2 is a vertical section looking from the right in F ig. 1. Fig. 3 is a llongitudinal section through the upper end of the piston rod.

' 1 indicates the side bars of the vehicle' to the rear end of which are secured brackets customary heretofore 4touse theparts being so arranged that the vconstruction is well known.

position, either'on the sideframes l or on speclalchairs carriedl thereby. This general Ata p oint ,'slightlyforward of the front end of the bodyy is a supplementary. frame Mounted upon the supplemental frame in l any suitable manner is a hoisting cylinder 10, the upper end vof which is surrounded by an expanslon chamber 11: in freecommunlcation therewith.. Also supported on the supplemental frame in' any preferred manner, for example, by being attached directly -to the base l12 of the hoisting'fcyl'inder, is a Y 2 bearing pivots 3, about which the body 4 may be. swung vertically Afor dumping purposes. The body may beprovided along its lower side with longitudinal frame pieces '5 so arranged as to rest', when in lowered gear pump 18 which ma be driven from the propeller shaft 14 by c utch mechanism 15,

kthe details of which need not here'be described. The cylinder encloses a piston (not shown) of customary construction having -a hollow perforated piston rod16 that extends out through a stuiiing box 17 located at the upper end of the cylinder-as this piston rod serves as a part of thestorage reservoir for oil whereby the hoisting is accomplished, l

its .upper end is closed bya diaphragm 1'8 e piston rod 1s perforated above the diaphragm to receive `the hollow sleeve 20 i through which a pivot bolt 21 in turn passes;

the bolt also'passes through the bars 22 that extend 'equal distances in opposite directions transversely of the vehicle and have 'their ends connected by bolts 23 upon which sup-f l 'portingstraps 24 forpulleys. 25 arehung.

Inthe preferred construction, the pulleys are' located outwardly beyond the corresponding vside bars. The front end of the body has securedthereto in any suitable manner body arms 26, which are preferably located so that their lower ends, at least, normally extend down outside 'of ,the

adjacent sidebar, and which may have theirl intermediate portions bowed forwardly as indicated at 28 (Fig. l) and connected vto* the members 5 by bra-ces 29. Anchor-ed vto the ends of the front cross bar, for example, by means of eye .bolts 30, are' cables y31 which pass over the pulleys 25 and have their other I ends attached to the lower end of the corresponding body arm,`preferably by means of a shaclrle 32and pimt .3,3. A

'The pump, upon being actuated, drawstlle stored oilffrom the expansion chamber and the space above the piston down through the pipe 34 and expels it-through apassage (not shown) into'the cylinder at a point beneath v the piston,'which thereupon rises and tilts fere with the clutch or other members which ma sin far enough to allow the use of a rel; atively short hoisting cylinder. At the same time, the lower 'ends of the body arms, which follow quite closely the line of the cable at tached thereto, are subjected to very little bending stress, and the members.. 29 co-act with the body and the .upper portions of the body arms to form a truss whereby the greater bending stresses in the upper portions of the side arms are taken. s o

I claim l '1. In combination with the frame of a vehicle, a body pivoted adjacent the rear end Aof, said frame to tip, hydraulic hoisting means for the front end of the body, said' -hoisting means including an upwardly projecting cylinder, a hollow piston rod reciprocable in said cylinder, the upper end of said piston rod being perforated transversely, two cross bars, one on each side of the piston rod, a pivot passing through the perforation in the piston rod and through the cross bars, means for joining the outer ends of said cross bars to form a cross-arm, and tension members supported by the last mentioned lmeans and arranged to transmit liftingstress ,to opposite sides of the front end of the body.

2. In combination with the frame ofa vehicle, a body pivoted adjacent the rear end of said frame to tip, hydraulic hoisting means for the front end of the body, said hoistingvmeans including an upwardly projectin cylinder, a hollow piston rod reciproc'ab e in said cylinder, the upper end of said piston rod being perforated transversely, a hollow sleeve passing through the rod, a pivot passing through'the sleeve and ing the outer ends of the cross bars, and -tension members supported by the last mentioned means and arranged to transmit liftbe located in this region and yet may ing stress to opposite sides of the frontend member, said cross-bar construction .includ ing a plurality of members connected together near their outer end portions and "eX tending transversely of the vehicle, and ten.

sion members supported by the end portionslof said members and arranged to transmit lifting stress to opposite .side portions of the adjacent end of the body.

4. In combination with the side bars of a vehicle, and a body pivoted near the rear end thereof to tip, anv upright guide centrally mounted on the vehicle forward ofthe body, a member reciprocable in respect theretoand projecting upwardly therefrom, a cross bar supported` by the reciprocable member and tiltable transversely of the vehicle, pulleys supported on the cross bar outside of the vertical planes through the corresponding side bars and rotatable, about axes extending transversely of the vehicle,and cables passing over the pulleys and connected to the .body outside of said side bars.

5. In combination withl the -frame of a motor vehicle, a body pivoted adjacent the rear end thereof to tip, 4an upright cylinder forward of the front end of the body, a pisyton rod reciprocable therein, a cross arm carbars, pulleys supported by said bolts, and

cables passing over said pulleys and operatively connected to the body, whereby the latter is tilted as the piston rod rises.

6.` In mechanism of the class described, an

'upstandingcylinden a piston rod reciprocable therein and projectlng from the upper end thereof, a c ross arm comprising two separate bars located on opposite sides of a longitudinal central plane of the piston rod, 1

means for supporting the cross -arm on the piston rod, said means including a pivot the axis of which extends transversely of and substantially intersects that of -thepiston rod, bolts joining the outerv ends of the bars, pulleys supported on the outer ends of said bars, and cablespassing over the pulleys.

7. In combination, a cylinder, a piston`rod reciprocable therein, a cross arm actuated thereby, said cross arm including two portions one on each side of a longitudinal central plane of the piston rod, bolts joining reolprocable member and including two members'a-rranged substantially symmetr- 10 cally with reference to said reelprocable member and joined together ear their outer end portions, and tension elements for trans-v mttmg lifting` stress from said outer end portlons'to spaced points on the body, Where- 15'. by the latter may be tilted.

',GARIEL A. Weep. 

